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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Delivery head of a centrifugal pump is

Directly proportional to N
Directly proportional to N²
Inversely proportional to N
Inversely proportional to N²

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Hydraulics and Fluid Mechanics in ME
The specific speed of a hydraulic turbine depends upon

Speed and power developed
Speed, power developed and head of water
Speed and head of water
Discharge and power developed

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Hydraulics and Fluid Mechanics in ME
Hydrometer is used to determine

specific gravity of liquids
specific gravity of gases
relative humidity
specific gravity of solids

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Hydraulics and Fluid Mechanics in ME
According to fan laws, at constant pressure, the speed capacity and power vary

Inversely as density
As square of density
Inversely as square root of density
Directly as the air or gas density

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Hydraulics and Fluid Mechanics in ME
The bulk modulus of elasticity with increase in pressure

remains constant
increases
increases first upto certain limit and then decreases
decreases

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Hydraulics and Fluid Mechanics in ME
For centrifugal pump impeller, the maximum value of the vane exit angle is

25° to 30°
15° to 20°
10° to 15°
20° to 25°

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